Find three numbers such that

* When we multiply three numbers, we will get the prime numbers.
* The difference between the second and the first number is equal to the third and second.

Six glasses are in a row. The first three are filled with milk and the last three are empty. By moving only one glass, can you arrange them so that the full and the empty glasses alternate?

I am looking for a word that change both gender and number when i add the letter 'S'.

What Word am I Looking For ?

Which wheel of car does not rotate when you turn your car right?

I speak without a mouth, and hear without ears. I have no-body, but I come alive with the wind. What am I?

What is the next number in this matchsticks series riddle?

I am the beginning of the end, and the end of time and space. I am essential to creation, and I surround every place. What am I?

We have four gears with below features=> Both Gear A and D has 60 teeth=> Gear B has 40 teeth=> Gear C has 20 teeth=> Every two minutes, Gear B makes 25 full turns.What is the relative speed of Gear A and Gear B?

What English word has three consecutive double letters?

A man is trapped in a room. The room has only two possible exits doors. Through the first door there is a room constructed from magnifying glass. The blazing hot sun instantly fries anything or anyone that enters. Through the second door there is a fire-breathing dragon. How does the man escape?